The parameters that affect the dynamic accuracy of the touch prob can be attributed to seven main measurement factors: proximity speed, measurement force, probe length, proximity distance, probe operating direction, number of sampling points, and measuring section diameter.
By analyzing the essential relationship or connection between these factors and the generation of errors, and changing relevant factor parameters during practical workpiece state measurement, and analyzing their changed states, a reasonable analysis can be made. Among various parameters that change, the proximity speed is the most critical factor affecting measurement data error, with a maximum measurement error of up to 3.3um, exceeding the detection error of 2.7μm allowed by the measurement system, resulting in a significant instability factor phenomenon of the measuring probe.
In modern industrial manufacturing production processes, measuring systems require dynamic measurement to improve efficiency, reduce errors, and increase quality pass rate. However, in online measurement systems in workshop factories, a certain amount of error can still occur, leading to unattainable expectations of high-precision measurement calibration, mainly reflected in measurement speed and measurement cycle.
1. The impact of the proximity speed of the touch prob:
As the movement speed increases, the error also increases. The error curve of the measurement force has a large fluctuation under static measurement environmental conditions, and a large measurement force can also cause the measurement results to be unstable.
2. The probe length of the touch prob:
Under the same speed, there is a significant correlation between measurement error and probe length.
3. Proximity distance of the touch prob:
The shorter the proximity distance, the greater the error. Setting it too long and with a fast speed will still cause numerical fluctuations in the measurement results. Compared to proximity distance, the measurement speed factor has a more profound impact.
4. The direction of the touch prob:
In quick measurement curves, the measurement speed factor has a more profound impact than the direction of the probe.
5. The number of sampling points of the touch prob:
Choosing fewer sampling points will result in more significant errors, and the effective upper limit of sampling points needs to be considered as a specific numerical area.
6. The probe end diameter of the touch prob:
The larger the diameter, the more stable the error curve, and the smaller the error.
The proximity speed has a significant impact on the dynamic measurement accuracy of the touch prob, and it also increases the fluctuation amplitude of the error curve, resulting in the uncertainty of the measurement results. Therefore, to avoid significant measurement errors, it is best to adjust the proximity speed to a lower and slower rate while not affecting the efficiency of the measurement.